/Engine/Plugins/Slate/SlateScripting/Source/SlateScriptingCommands/Public/UICommandsScriptingSubsystem.h
Checks whether the given command is registered within the subsystem. Using name, set and context for comparison
[UFUNCTION](Programming/UnrealArchitecture/Reference/Functions)(BlueprintCallable, Category="Editor Scripting | Commands |") bool IsCommandRegistered ( [FScriptingCommandInfo](API\Plugins\SlateScriptingCommands\FScriptingCommandInfo) CommandInfo, bool bCheckInputChord ) const